How to add a column to the end of a GROUP

In either the Dictionary Quick View or the Entity Browser, when you highlight a field at the end of a GROUP or QUEUE, the Add button changes to a button with a drop down.

If you click on the drop down, you can select to add a field to the group or the parent. In the case where the field is at the end of a group which is itself at the end of a group you have the option to add to the group, the parent group or the parent of the parent group. The list of options grows as you have more nested groups.

You can also add a field after a group by right clicking on the field at the end of the group.